What color diamond dove is this?

[Cye]

The best I can tell is rufous? He's dark gray, with darker gray spots on his head, black rump/tail, and a fairly good tinge of brown on his back, which photos really bring out.

[Colt]

The bird to the left is called a Blue Diamond Dove (also known as the wild-type Diamond Dove). The other bird appears to be a Blue White-rump or something of the sort.

http://www.strombergschickens.com/prod_ ... mond-Doves

[Chris103]

I'll second Colt on the mutations. Though, The only way to be 100% sure is by open wing pictures. My White Tailed Red Diamond Doves look almost just like a Blue WT....Until you spread open their wings and have a look at their Flight Feathers. The amount of dilution, suffusion. ..or lack there of, will determine the exact mutation.